* ``urwid`` is an optional dependency used for :ref:`interactive browser <browser>`.
* ``dateutil`` is an optional dependency used for ``.totzdatetime()`` method.
* ``urwid`` is an optional dependency used for :ref:`interactive browser <browser>`.
* ``dateutil`` is an optional dependency used for ``.totzdatetime()`` method.
You have to verify downloaded tarballs integrity and authenticity to be
sure that you retrieved trusted and untampered software. `GNU Privacy
Guard <https://www.gnupg.org/>`__ is used for that purpose.
You have to verify downloaded tarballs integrity and authenticity to be
sure that you retrieved trusted and untampered software. `GNU Privacy
Guard <https://www.gnupg.org/>`__ is used for that purpose.